*, *::before, *::after {
    box-sizing: border-box;
}

body, h1, h2, h3, p, ul {
    margin: 0;
    padding: 0;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

:root {
    --primary: #1E90FF; /* DodgerBlue */
    --primary-dark: #1873CC;
    --primary-light: #F0F7FF;

    --success: #2A7D4F;
    --danger: #DB2A2A;
    --danger-dark: #991D1D;
    --danger-light: #DBC1C1;

    --neutral: #D3D3D3; /* LightGrey */
    --neutral-strong: #A9A9A9; /* DarkGrey */
    --border-dim: #F7F7F7;

    --text-main: #3C444D;
    --text-muted: #5B6875;
    --text-inverse: #FFFFFF;
    --text-strong: #000000;

    --bg-app: #F7F7F7;
    --bg-surface: #FFFFFF;
    --bg-disabled: #F2F2F2;
    --overlay-bg: rgba(0, 0, 0, 0.5);

    --focus-ring: rgba(30, 144, 255, 0.25);
    --shadow: rgba(0, 0, 0, 0.5);

    --z-sticky-low:2;
    --z-sticky: 1000;
    --z-sticky-header: 1500;
    --z-modal: 2000;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-app);
    color: var(--text-main);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
}

.alert {
    padding: 0.75rem;
    border-radius: 5px;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    text-align: center;
}

.alert-error {
    color: var(--danger-dark);
    background-color: var(--danger-light);
}

.standard-text strong {
    color: var(--primary-dark);
    font-weight: bold;
}

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}

/*
@media (prefers-color-scheme: dark) {
    :root {
        --bg-surface: #1E1E1E;
        --bg-app: #121212;
        --bg-disabled: #2d3748;

        --neutral-light: #121212;
        --primary-light: #1e293b;
        --neutral: #374151;
        --neutral-strong: #4B5563;

        --text-main: #E5E7EB;
        --text-strong: #FFFFFF;
        --text-muted: #9CA3AF;

        --border-dim: #2D3748;
        --border-default: #374151;
        --border-subtle: rgba(255, 255, 255, 0.1);

        --focus-ring: rgba(30, 144, 255, 0.5);
        --shadow: rgba(0, 0, 0, 0.5);

        --bg-disabled-bg: #374151;
    }
}
*/